LTE CAT6 modem disconnecting every 2-3 minutes

[SiB]

PS: When the failure appeared, the LTE1 status was: Rx/TX disabled, not searching. Why would the LTE interface not search for network?
I could understand that the network drops the connection, but the modem should always search and RF (Rx/TX) should always be enabled.
Seems to me like the module had some internal reset or so…?

What mens “Rx/TX disabled”? lte1 as interface can be disabled but Rx/Tx can have =0 or >0.

Why would the LTE interface not search for network?

If you just have enable 3g/lte then he drops to 3g and stay on it.
He try stay in LTE if you not use Cell Lock. I check on 3 ISP sim card’s and he always try reconnect. (I put my SXTR&LTE6 on floor, even into metal box ) and after put it on place with signal the connectivity comeback to lte (in lte only mode) or 3g (if 3g.lte mode was selected before).

I know about issue with Rx=0, rsrq=19,5dB, other signal value freez what I currently checking with support@mikrotik.com and decsribe it into: http://forum.mikrotik.com/t/v6-46-1-stable-is-released/135478/1 but this is only when you use Cell Lock feature.

One bonus.
When i select Band=3 and CellLock (the same cell have 3g and lte) then when LTE is out-of-signal then 3g starts works for ever, never comeback to lte mode by himself. This works at CellLock with specific Band, and then the info give me earfcn&phy-cell on 3g connection what is never show in just simple 3g connection.

I hope my answer is ok